<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      body {
        padding: 100px;
      }

      article {
        width: 800px;
        height: 300px;
        border: solid 1px blueviolet;
        overflow: auto;
      }

      article h2 {
        position: sticky;
        top: 0;
        left: 0;
        padding: 10px;
        background: pink;
        color: white;
        font-size: 14px;
      }

      article section {
        height: 600px;
      }
    </style>
  </head>
  <body>
    <main>
      <article>
        <section></section>
        <h2>后盾人</h2>
        <section></section>
        <h2>HOUDUNREN</h2>
        <section></section>
      </article>
    </main>
  </body>
</html>
